/// <summary>
/// Создать/получить ребро
/// </summary>
/// <param name="from"></param>
/// <param name="to"></param>
/// <returns></returns>
public IGraphEdgeBuilder GetEdge(string from, string to)
{
if (null != _parent)
{
return(_parent.GetEdge(from, to));
}
var existed = Element.ResolveEdge(from, to);
if (null == existed)
{
existed = new Edge {
From = from, To = to
};
Element.AddEdge(existed);
}
return(new DotEdgeBuilder(existed));
}
